| 外源水杨酸对西葫芦幼苗耐热性的影响 |
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| 引用本文： | 李胜,刘建辉.外源水杨酸对西葫芦幼苗耐热性的影响[J].安徽农业科学,2009,37(7):2848-2850. |
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| 作者姓名： | 李胜 刘建辉 |
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| 作者单位： | 西北农林科技大学园艺学院,陕西杨凌,712100;西北农林科技大学园艺学院,陕西杨凌,712100 |
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| 基金项目： | 国家“十一五”科技支撑计划(2007BAD79B04) |
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| 摘 要： | 目的]研究外源水杨酸（SA）对西葫芦幼苗耐热性的影响。方法]以翡翠2号西葫芦幼苗为材料,用浓度75μmol/L的水杨酸溶液进行叶面喷施,对照喷蒸馏水,24 h后进行40℃4、8 h的高温胁迫,并测定叶片各生理指标。结果]经浓度75μmol/L的水杨酸预处理的幼苗,在高温胁迫下,SODP、OD活性和可溶性蛋白含量高于对照,而MDA含量低于对照。结论]浓度75μmol/L的水杨酸可通过增强抗氧化酶活性,提高西葫芦幼苗的耐热性。
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| 关 键 词： | 西葫芦 水杨酸 高温胁迫 抗氧化酶 丙二醛 可溶性蛋白 |
Effects of Exogenous Salicylic Acid on the Heat Tolerance of Zucchini Seedlings |
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| LI Sheng et al.Effects of Exogenous Salicylic Acid on the Heat Tolerance of Zucchini Seedlings[J].Journal of Anhui Agricultural Sciences,2009,37(7):2848-2850. |
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| Authors: | LI Sheng |
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| Affiliation: | LI Sheng et al(College of Horticulture,Northwest Sci-tech University of Agriculture , Forestry,Yangling,Shaanxi 712100) |
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| Abstract: | Objective] The research aimed to study the effects of exogenous salicylic acid(SA) on the heat tolerance of zucchini seedlings(Cucurbita pepo L).Method] Taking zucchini cultivar Feicui 2 as test materials,75 μmol/L SA solution was sprayed on the leaves of zucchini seedlings and the control were sprayed with distilled water.24 hours later,the seedlings were subjected to heat stress of 40 ℃ for 48 hours and the physiological indices of leaves were measured.Result] The results showed that SOD and POD activities and soluble protein content in zucchini seedlings pretreated with 75 μmol/ L SA were higher under heat stress than that in control,but the content of MDA was lower than control.Conclusion]75 μmol/L SA solution could increase the heat tolerance of zucchini seedlings by strengthening the activities of antioxidant enzymes. |
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| Keywords: | Zucchini Salicylic acid Heat stress Antioxidant enzymes Malondialdehyde(MDA) Soluble protein |
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